For outdoor picnic table style dining it's my new preference. The ability to easily leave a tab open and progressively order food and drinks on demand is amazing.

Not that it should replace all dining experiences but wait staff free dining when ordering from a bar + kitchen is superior for these instances.

The ability to just get up an walk off without synchronous negotiation is a more relaxed dining experience, the ability to have people progressively join and leave your party is also fantastic and can facilitate an old school community dining hall experience.

There are a few UIs I like for mobile, many are quite poor though.